PEEK (Unfilled) vs PEI (Ultem 1000) Unfilled
Property comparison of PEEK (Unfilled) and PEI (Ultem 1000) Unfilled, both polymer.
| Property | PEEK (Unfilled) | PEI (Ultem 1000) Unfilled | Difference |
|---|---|---|---|
| Tensile strength | 100 MPa | 105 MPa | +5% |
| Elongation | 35 % | 60 % | +71% |
| Elastic modulus | 3,600 MPa | 3,300 MPa | -8% |
| Poisson ratio | 0.4 | 0.37 | -8% |
| Density | 1,320 kg/m³ | 1,270 kg/m³ | -4% |
| Thermal conductivity | 0.25 W/m·K | 0.22 W/m·K | -12% |
| Specific heat | 1,340 J/kg·K | 1,250 J/kg·K | -7% |
| Coefficient of thermal expansion | 0.000047 1/K | 0.000056 1/K | +19% |
Difference is PEI (Ultem 1000) Unfilled relative to PEEK (Unfilled). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ASTM
- standard
- ASTM
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